2 * Copyright (C) 2007-2008
3 * Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
6 * Kenati Technologies, Inc.
8 * board/MigoR/lowlevel_init.S
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 #include <asm/processor.h>
32 * Board specific low level init code, called _very_ early in the
33 * startup sequence. Relocation to SDRAM has not happened yet, no
34 * stack is available, bss section has not been initialised, etc.
36 * (Note: As no stack is available, no subroutines can be called...).
45 mov.l CCR_A, r1 ! Address of Cache Control Register
46 mov.l CCR_D, r0 ! Instruction Cache Invalidate
49 mov.l MMUCR_A, r1 ! Address of MMU Control Register
50 mov.l MMUCR_D, r0 ! TI == TLB Invalidate bit
53 mov.l MSTPCR0_A, r1 ! Address of Power Control Register 0
57 mov.l MSTPCR2_A, r1 ! Address of Power Control Register 2
77 mov.l RWTCSR_A, r1 ! 0xA4520004 (Watchdog Control / Status Register)
78 mov.w RWTCSR_D_1, r0 ! 0xA507 -> timer_STOP/WDT_CLK=max
81 mov.l RWTCNT_A, r1 ! 0xA4520000 (Watchdog Count Register)
82 mov.w RWTCNT_D, r0 ! 0x5A00 -> Clear
85 mov.l RWTCSR_A, r1 ! 0xA4520004 (Watchdog Control / Status Register)
86 mov.w RWTCSR_D_2, r0 ! 0xA504 -> timer_STOP/CLK=500ms
89 mov.l DLLFRQ_A, r1 ! 20080115
90 mov.l DLLFRQ_D, r0 ! 20080115
93 mov.l FRQCR_A, r1 ! 0xA4150000 Frequency control register
94 mov.l FRQCR_D, r0 ! 20080115
97 mov.l CCR_A, r1 ! Address of Cache Control Register
98 mov.l CCR_D_2, r0 ! ??
102 mov.l CMNCR_A, r1 ! CMNCR address -> R1
103 mov.l CMNCR_D, r0 ! CMNCR data -> R0
104 mov.l r0, @r1 ! CMNCR set
106 mov.l CS0BCR_A, r1 ! CS0BCR address -> R1
107 mov.l CS0BCR_D, r0 ! CS0BCR data -> R0
108 mov.l r0, @r1 ! CS0BCR set
110 mov.l CS4BCR_A, r1 ! CS4BCR address -> R1
111 mov.l CS4BCR_D, r0 ! CS4BCR data -> R0
112 mov.l r0, @r1 ! CS4BCR set
114 mov.l CS5ABCR_A, r1 ! CS5ABCR address -> R1
115 mov.l CS5ABCR_D, r0 ! CS5ABCR data -> R0
116 mov.l r0, @r1 ! CS5ABCR set
118 mov.l CS5BBCR_A, r1 ! CS5BBCR address -> R1
119 mov.l CS5BBCR_D, r0 ! CS5BBCR data -> R0
120 mov.l r0, @r1 ! CS5BBCR set
122 mov.l CS6ABCR_A, r1 ! CS6ABCR address -> R1
123 mov.l CS6ABCR_D, r0 ! CS6ABCR data -> R0
124 mov.l r0, @r1 ! CS6ABCR set
126 mov.l CS0WCR_A, r1 ! CS0WCR address -> R1
127 mov.l CS0WCR_D, r0 ! CS0WCR data -> R0
128 mov.l r0, @r1 ! CS0WCR set
130 mov.l CS4WCR_A, r1 ! CS4WCR address -> R1
131 mov.l CS4WCR_D, r0 ! CS4WCR data -> R0
132 mov.l r0, @r1 ! CS4WCR set
134 mov.l CS5AWCR_A, r1 ! CS5AWCR address -> R1
135 mov.l CS5AWCR_D, r0 ! CS5AWCR data -> R0
136 mov.l r0, @r1 ! CS5AWCR set
138 mov.l CS5BWCR_A, r1 ! CS5BWCR address -> R1
139 mov.l CS5BWCR_D, r0 ! CS5BWCR data -> R0
140 mov.l r0, @r1 ! CS5BWCR set
142 mov.l CS6AWCR_A, r1 ! CS6AWCR address -> R1
143 mov.l CS6AWCR_D, r0 ! CS6AWCR data -> R0
144 mov.l r0, @r1 ! CS6AWCR set
146 ! SDRAM initialization
147 mov.l SDCR_A, r1 ! SB_SDCR address -> R1
148 mov.l SDCR_D, r0 ! SB_SDCR data -> R0
149 mov.l r0, @r1 ! SB_SDCR set
151 mov.l SDWCR_A, r1 ! SB_SDWCR address -> R1
152 mov.l SDWCR_D, r0 ! SB_SDWCR data -> R0
153 mov.l r0, @r1 ! SB_SDWCR set
155 mov.l SDPCR_A, r1 ! SB_SDPCR address -> R1
156 mov.l SDPCR_D, r0 ! SB_SDPCR data -> R0
157 mov.l r0, @r1 ! SB_SDPCR set
159 mov.l RTCOR_A, r1 ! SB_RTCOR address -> R1
160 mov.l RTCOR_D, r0 ! SB_RTCOR data -> R0
161 mov.l r0, @r1 ! SB_RTCOR set
163 mov.l RTCNT_A, r1 ! SB_RTCNT address -> R1
164 mov.l RTCNT_D, r0 ! SB_RTCNT data -> R0
167 mov.l RTCSR_A, r1 ! SB_RTCSR address -> R1
168 mov.l RTCSR_D, r0 ! SB_RTCSR data -> R0
169 mov.l r0, @r1 ! SB_RTCSR set
171 mov.l RFCR_A, r1 ! SB_RFCR address -> R1
172 mov.l RFCR_D, r0 ! SB_RFCR data -> R0
175 mov.l SDMR3_A, r1 ! SDMR3 address -> R1
176 mov #0x00, r0 ! SDMR3 data -> R0
177 mov.b r0, @r1 ! SDMR3 set
179 ! BL bit off (init = ON) (?!?)
181 stc sr, r0 ! BL bit off(init=ON)
193 MSTPCR0_A: .long MSTPCR0
194 MSTPCR2_A: .long MSTPCR2
195 PFC_PULCR_A: .long PULCR
196 PFC_DRVCR_A: .long DRVCR
199 RWTCSR_A: .long RWTCSR
200 RWTCNT_A: .long RWTCNT
203 DLLFRQ_A: .long DLLFRQ
205 CCR_D: .long 0x00000800
206 CCR_D_2: .long 0x00000103
207 MMUCR_D: .long 0x00000004
208 MSTPCR0_D: .long 0x00001001
209 MSTPCR2_D: .long 0xffffffff
210 PFC_PULCR_D: .long 0x6000
211 PFC_DRVCR_D: .long 0x0464
212 FRQCR_D: .long 0x07033639
213 PLLCR_D: .long 0x00005000
214 DLLFRQ_D: .long 0x000004F6
217 CMNCR_D: .long 0x0000001B
218 CS0BCR_A: .long CS0BCR
219 CS0BCR_D: .long 0x24920400
220 CS4BCR_A: .long CS4BCR
221 CS4BCR_D: .long 0x00003400
222 CS5ABCR_A: .long CS5ABCR
223 CS5ABCR_D: .long 0x24920400
224 CS5BBCR_A: .long CS5BBCR
225 CS5BBCR_D: .long 0x24920400
226 CS6ABCR_A: .long CS6ABCR
227 CS6ABCR_D: .long 0x24920400
229 CS0WCR_A: .long CS0WCR
230 CS0WCR_D: .long 0x00000380
231 CS4WCR_A: .long CS4WCR
232 CS4WCR_D: .long 0x00110080
233 CS5AWCR_A: .long CS5AWCR
234 CS5AWCR_D: .long 0x00000300
235 CS5BWCR_A: .long CS5BWCR
236 CS5BWCR_D: .long 0x00000300
237 CS6AWCR_A: .long CS6AWCR
238 CS6AWCR_D: .long 0x00000300
240 SDCR_A: .long SBSC_SDCR
241 SDCR_D: .long 0x80160809
242 SDWCR_A: .long SBSC_SDWCR
243 SDWCR_D: .long 0x0014450C
244 SDPCR_A: .long SBSC_SDPCR
245 SDPCR_D: .long 0x00000087
246 RTCOR_A: .long SBSC_RTCOR
247 RTCNT_A: .long SBSC_RTCNT
248 RTCNT_D: .long 0xA55A0012
249 RTCOR_D: .long 0xA55A001C
250 RTCSR_A: .long SBSC_RTCSR
251 RFCR_A: .long SBSC_RFCR
252 RFCR_D: .long 0xA55A0221
253 RTCSR_D: .long 0xA55A009a
254 SDMR3_A: .long 0xFE581180
256 SR_MASK_D: .long 0xEFFFFF0F
260 SBSCR_D: .word 0x0044
262 RWTCSR_D_1: .word 0xA507
263 RWTCSR_D_2: .word 0xA504
264 RWTCNT_D: .word 0x5A00